Special hydraulic lifting device for replacing yaw motor

Abstract

The utility model relates to a special hydraulic lifting device for replacing a yaw motor, which comprises a movable base, a hydraulic pump mounted on the movable base, a delivery pipe with one end connected to the hydraulic pump and a hydraulic cylinder mounted on the movable base, and the hydraulic pump and the hydraulic cylinder are arranged on the movable base at intervals. One end of the conveying pipe is communicated with the hydraulic pump, the other end of the conveying pipe is connected with the hydraulic cylinder and communicated with a cylinder body of the hydraulic cylinder, and the conveying pipe is provided with an oil discharge one-way valve. The yaw motor replacing device can solve the technical problem that when an existing replacing device is used for a yaw motor located at a relatively narrow working position, the existing replacing device is not suitable for replacing the yaw motor under the working situation.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a special hydraulic lifting device for replacing yaw motors. Background Technology

[0002] A yaw motor is a motor capable of adjusting the angle and direction of airborne equipment. Yaw motors are small in size and heavy in weight, and are typically mounted on a platform in the engine room, at a certain height above the ground, in a relatively confined space. Therefore, in existing technologies, replacing yaw motors in this operating environment presents challenges. Using cranes or chain hoists, it is difficult to find suitable anchor points. Manual replacement requires precise alignment, is labor-intensive and time-consuming, and poses safety risks. Furthermore, conventional hydraulic lifting devices are generally large and inconvenient for replacing yaw motors in such confined spaces. Utility Model Content

[0003] This invention addresses the technical problem that existing replacement devices are unsuitable for replacing yaw motors in relatively confined working positions, and provides a dedicated hydraulic lifting device for replacing yaw motors.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A special hydraulic lifting device for replacing yaw motors includes a mobile base, a hydraulic pump mounted on the mobile base, a hydraulic cylinder mounted on the mobile base, and a delivery pipe. The hydraulic pump and the hydraulic cylinder are spaced apart on the mobile base. One end of the delivery pipe is connected to the hydraulic pump, and the other end of the delivery pipe is connected to the hydraulic cylinder and connected to the cylinder body of the hydraulic cylinder. The delivery pipe is equipped with a drain check valve.

[0006] The beneficial effects of this utility model are: when in use, the hydraulic pump and hydraulic cylinder are set at intervals, which makes it convenient for workers to work away from the hydraulic cylinder. The position of the entire hydraulic lifting device can be easily adjusted by moving the movable base, so that the top rod of the hydraulic cylinder is located below the yaw motor to be replaced. This improves the technical problem that existing replacement devices are not suitable for replacing yaw motors in relatively narrow working positions.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, it also includes a drain valve and an oil tank. The oil inlet of the drain valve is connected to a first return oil pipe, and the drain valve is connected to the hydraulic cylinder through the first return oil pipe. The oil outlet of the drain valve is connected to a second return oil pipe, and the drain valve is connected to the oil tank through the second return oil pipe.

[0009] The beneficial effect of adopting the above-mentioned further scheme is that when the lifting operation is completed or the yaw motor is raised and lowered, the height of the hydraulic cylinder push rod decreases and the oil drain valve is opened, so that the hydraulic oil in the hydraulic cylinder enters the oil tank for storage through the first oil return pipe, the oil drain valve and the second oil return pipe.

[0010] Furthermore, it also includes an oil suction check valve, the oil suction check valve having an inlet and an outlet connected to a connecting pipe, one end of which is connected to the oil tank and the inlet of the oil suction check valve respectively, and the other end of which is connected to the outlet of the oil suction check valve and the hydraulic pump respectively.

[0011] The beneficial effect of adopting the above-mentioned further solution is that, during use, the hydraulic oil in the oil tank can be replenished by opening the oil suction check valve and generating suction through the hydraulic pump.

[0012] Furthermore, the oil tank is installed below the hydraulic pump.

[0013] The advantages of adopting the above-mentioned further solution are: saving installation space, reducing the weight of the entire lifting device, and the hydraulic pump being installed above the oil tank, which facilitates the operation of the hydraulic pump.

[0014] Furthermore, a mounting bracket is installed above the oil tank, and the hydraulic pump is mounted on the mounting bracket.

[0015] The advantage of adopting the above-mentioned further solution is that the hydraulic pump can be supported by a fixed frame.

[0016] Furthermore, the drain valve is located between the hydraulic pump and the hydraulic cylinder.

[0017] The advantages of adopting the above-mentioned further solution are: to shorten the length of the delivery pipe, the first return pipe and the second return pipe, and to save installation space.

[0018] Furthermore, the hydraulic pump includes a pump body mounted on the movable base, a piston plate disposed within the pump body, and a piston rod with one end fixedly connected to the piston plate. The other end of the piston rod extends upward out of the pump body and is threadedly connected to the pump body.

[0019] The beneficial effects of adopting the above-mentioned further scheme are as follows: When carrying out lifting operations, the oil drain check valve is opened, the operator rotates the piston rod, drives the piston plate to move downward and squeezes the hydraulic oil in the pump body, the hydraulic pump operates, and the hydraulic oil in the hydraulic pump enters the hydraulic cylinder through the delivery pipe, and the yaw motor is lifted by the push rod of the hydraulic cylinder.

[0020] Furthermore, the movable base includes a base and a plurality of rollers mounted on the base, and the hydraulic pump and the hydraulic cylinder are both mounted on the base.

[0021] The beneficial effects of adopting the above-mentioned further solution are: when carrying out lifting operations, the rollers can be rolled by applying force to the base to adjust the support position of the movable base, thereby achieving effective adjustment of the support position of the yaw motor and moving the supported yaw motor.

[0022] Furthermore, the movable base also includes at least three vertical telescopic support members evenly distributed on the base.

[0023] The beneficial effect of adopting the above-mentioned further solution is that when lifting the yaw motor by means of a hydraulic cylinder, the base can be stably supported by the downward movement of the vertical telescopic support, at which time the roller is suspended in the air.

[0024] Furthermore, each of the vertical telescopic support members includes a screw threaded to the base, a pad connected to the lower end of the screw, and a handle fixedly connected to the upper part of the screw at one end.

[0025] The beneficial effect of adopting the above-mentioned further solution is that when the base is stably supported by the vertical telescopic support, force is applied to the handle and the screw is rotated to make the pad move downward and press against the ground until the roller is suspended in the air. Attached Figure Description

[0026] Figure 1 First-view isometric view of the yaw motor replacement with a dedicated hydraulic lifting device according to this utility model;

[0027] Figure 2 A top view of the yaw motor replacement with a dedicated hydraulic lifting device according to this utility model;

[0028] Figure 3 A second-view isometric view of the yaw motor of this utility model being replaced with a dedicated hydraulic lifting device;

[0029] Figure 4 A cross-sectional view of the hydraulic pump of the special hydraulic lifting device for replacing the yaw motor of this utility model.

[0030] Figure 5 for Figure 3Enlarged view of part A in the middle.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Movable base; 11. Base; 12. Casters; 13. Vertical telescopic support; 131. Screw; 132. Pad; 133. Handle; 134. Sleeve;

[0033] 2. Hydraulic pump; 21. Pump body; 22. Piston plate; 23. Piston rod; 24. Handle;

[0034] 3. Delivery pipe; 31. Oil drain check valve;

[0035] 4. Hydraulic cylinder;

[0036] 5. Drain valve; 51. First return oil pipe;

[0037] 6. Oil tank; 61. Second return oil pipe; 62. Fixture;

[0038] 7. Oil suction check valve; 71. Connecting pipe. Detailed Implementation

[0039] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0040] Example 1

[0041] like Figures 1 to 4 A special hydraulic lifting device for replacing yaw motors includes a mobile base 1, a hydraulic pump 2 mounted on the mobile base 1, a hydraulic cylinder 4 mounted on the mobile base 1, and a delivery pipe 3. The hydraulic pump 2 and the hydraulic cylinder 4 are spaced apart on the mobile base 1. One end of the delivery pipe 3 is connected to the hydraulic pump 2, and the other end of the delivery pipe 3 is connected to the hydraulic cylinder 4 and connected to the cylinder body of the hydraulic cylinder 4. The delivery pipe 3 is equipped with an oil discharge check valve 31.

[0042] The beneficial effects of this embodiment are: when in use, the hydraulic pump 2 and the hydraulic cylinder 4 are spaced apart, which makes it easy for the operator to move away from the hydraulic cylinder 4 and carry out the work. The position of the entire hydraulic lifting device can be adjusted adaptively by moving the movable base 1, so that the push rod of the hydraulic cylinder 4 is located below the yaw motor to be replaced. This improves the technical problem that the existing replacement device is not suitable for replacing the yaw motor in a relatively narrow working position.

[0043] When performing lifting operations, the drain check valve 31 is opened, and the operator operates the hydraulic pump 2, so that the hydraulic oil in the hydraulic pump 2 enters the hydraulic cylinder 4 through the delivery pipe 3. The jacking rod of the hydraulic cylinder 4 is used to lift the yaw motor.

[0044] As a specific embodiment of the above, the hydraulic cylinder 4 can be a commercially available hydraulic cylinder, which includes a cylinder body, a cylinder head, a piston, and a piston rod. The cylinder body is the main component of the hydraulic cylinder, forming a sealed cavity together with the cylinder head to drive the piston. The piston is the main component that converts hydraulic energy into mechanical energy, and its effective working area directly affects the force and movement speed of the hydraulic cylinder. The piston rod is the main component that transmits force in the hydraulic cylinder, and the material is generally medium carbon steel (such as 45# steel).

[0045] The hydraulic cylinder 4 uses the high-pressure liquid supplied by the hydraulic pump 2 to drive the piston in a linear reciprocating motion. When the high-pressure oil enters one side of the hydraulic cylinder 4, it will generate a thrust on the piston, thereby lifting the yaw motor.

[0046] Example 2

[0047] like Figures 1 to 3 Based on Example 1, the special hydraulic lifting device for replacing the yaw motor described in this example also includes a drain valve 5 and an oil tank 6. The oil inlet end of the drain valve 5 is connected to a first return oil pipe 51, and the drain valve 5 is connected to the hydraulic cylinder 4 through the first return oil pipe 51. The oil outlet end of the drain valve 5 is connected to a second return oil pipe 61, and the drain valve 5 is connected to the oil tank 6 through the second return oil pipe 61.

[0048] The beneficial effect of adopting the preferred solution in the above embodiments is that when the lifting operation is completed or the yaw motor is raised and lowered, the height of the push rod of the hydraulic cylinder 4 decreases and the drain valve 5 is opened, so that the hydraulic oil in the hydraulic cylinder 4 enters the oil tank 6 for storage through the first return oil pipe 51, the drain valve 5 and the second return oil pipe 61.

[0049] Example 3

[0050] like Figures 1 to 3 Based on embodiments 1 and 2, the special hydraulic lifting device for replacing the yaw motor described in this embodiment also includes an oil suction check valve 7, and the oil inlet and outlet of the oil suction check valve 7 are both connected to a connecting pipe 71. The two ends of one connecting pipe 71 are respectively connected to the oil tank 6 and the oil inlet of the oil suction check valve 7, and the two ends of the other connecting pipe 71 are respectively connected to the oil outlet of the oil suction check valve 7 and the hydraulic pump 2.

[0051] The beneficial effect of adopting the preferred solution in the above embodiments is that, in use, the hydraulic oil in the oil tank 6 can be replenished by opening the oil suction check valve 7 and generating suction through the hydraulic pump 2.

[0052] Example 4

[0053] like Figures 1 to 3 Based on embodiments 1-3, the oil tank 6 is installed below the hydraulic pump 2.

[0054] The advantages of adopting the preferred solution in the above embodiments are that it saves installation space, reduces the weight of the entire lifting device, and the hydraulic pump 2 is installed above the oil tank 6, which facilitates the operation of the hydraulic pump 2.

[0055] Example 5

[0056] like Figure 1 and Figure 3 Based on embodiments 1-4, a fixing frame 62 is installed above the oil tank 6, and the hydraulic pump 2 is installed on the fixing frame 62.

[0057] The advantage of adopting the preferred solution in the above embodiments is that the hydraulic pump 2 is supported by the fixing frame 62.

[0058] As a specific embodiment of the above, the fixing frame 62 is a frame structure welded from steel pipes.

[0059] Example 6

[0060] like Figures 1 to 3 Based on Examples 1-5, the drain valve 5 is located between the hydraulic pump 2 and the hydraulic cylinder 4.

[0061] The advantages of adopting the preferred solution in the above embodiments are that it shortens the length of the delivery pipe 3, the first return oil pipe 51 and the second return oil pipe 61, and saves installation space.

[0062] In this embodiment of the utility model, the mobile base 1 is generally rectangular in shape, and the hydraulic pump 2, the drain valve 5 and the hydraulic cylinder 4 are distributed in sequence at intervals. The hydraulic pump 2 and the hydraulic cylinder 4 are located at both ends of the mobile base 1, so that when lifting operations are performed, the operator stands at one end of the mobile base 1 and lifts the yaw motor relatively safely through the hydraulic cylinder 4 at the other end.

[0063] Example 7

[0064] like Figure 3 and Figure 4 Based on embodiments 1-6, the hydraulic pump 2 includes a pump body 21 mounted on a movable base 1, a piston plate 22 disposed inside the pump body 21, and a piston rod 23 with one end fixedly connected to the piston plate 22. The other end of the piston rod 23 extends upward out of the pump body 21 and is threadedly connected to the pump body 21.

[0065] The beneficial effect of adopting the preferred solution in the above embodiments is that, when carrying out lifting operations, the oil drain check valve 31 is opened, the operator rotates the piston rod 23, which drives the piston plate 22 to move downward and squeeze the hydraulic oil in the pump body 21, the hydraulic pump 2 operates, and the hydraulic oil in the hydraulic pump 2 enters the hydraulic cylinder 4 through the delivery pipe 3, and the yaw motor is lifted by the push rod of the hydraulic cylinder 4.

[0066] Based on the above embodiment, a handle 24 is fixedly connected to the other end of the piston rod 23 so that the piston rod 23 can be rotated by the handle 24.

[0067] Example 8

[0068] like Figure 1 and Figure 3 Based on embodiments 1-7, the movable base 1 includes a base 11 and a plurality of rollers 12 mounted on the base 11, and the hydraulic pump 2 and the hydraulic cylinder 4 are both mounted on the base 11.

[0069] The beneficial effect of adopting the preferred solution in the above embodiments is that, when carrying out lifting operations, the rollers 12 can be rolled by applying force to the base 11 to adjust the support position of the movable base 1, thereby realizing the effective support position adjustment of the yaw motor and moving the supported yaw motor.

[0070] The rollers 12 can be commercially available casters with braking functions. There are no fewer than four rollers 12.

[0071] Example 9

[0072] like Figure 3 and Figure 5 Based on embodiments 1-8, the movable base 1 also includes at least three vertical telescopic support members 13 evenly distributed on the base 11.

[0073] The beneficial effect of adopting the preferred solution in the above embodiments is that when the yaw motor is lifted by the hydraulic cylinder 4, the base 11 can be stably supported by the vertical telescopic support 13 moving downward, at which time the roller 12 is suspended.

[0074] Example 10

[0075] like Figure 3 and Figure 5 Based on embodiments 1-9, each vertical telescopic support 13 includes a screw 131 threaded to the base 11, a pad 132 connected to the lower end of the screw 131, and a handle 133 fixedly connected to the upper part of the screw 131 at one end.

[0076] The beneficial effect of adopting the preferred solution in the above embodiments is that when the base 11 is stably supported by the vertical telescopic support member 13, force is applied to the handle 133, and the screw 131 is rotated so that the pad 132 moves downward and presses against the ground until the roller 12 is suspended in the air.

[0077] In this embodiment of the utility model, the pad 132 is rotatably connected to the lower end of the screw 131 so that when the pad 132 abuts against the ground and the screw 131 is continuously rotated, the pad 132 and the screw 131 rotate relative to each other under the action of the ground friction force, so as to realize the smooth rotation of the screw 131.

[0078] As a parallel solution to the above embodiments, the vertical telescopic support member 13 may also be an electric cylinder, a pneumatic cylinder, etc., with the piston end extending downwards.

[0079] The vertical telescopic support 13 also includes a sleeve 134 fixedly connected to the base 11, and a screw 131 threadedly connected to the sleeve 134, so as to guide and limit the screw 131 through the sleeve 134, thereby improving the support stability of the screw 131.

[0080] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0082] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0083] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0085] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A dedicated hydraulic lifting device for replacing yaw motors, characterized in that, The device includes a movable base (1), a hydraulic pump (2) mounted on the movable base (1), a hydraulic cylinder (4) mounted on the movable base (1), and a delivery pipe (3). The hydraulic pump (2) and the hydraulic cylinder (4) are spaced apart on the movable base (1). One end of the delivery pipe (3) is connected to the hydraulic pump (2), and the other end of the delivery pipe (3) is connected to the hydraulic cylinder (4) and connected to the cylinder body of the hydraulic cylinder (4). The delivery pipe (3) is equipped with a drain check valve (31).

2. The special hydraulic lifting device for replacing a yaw motor according to claim 1, characterized in that, It also includes a drain valve (5) and an oil tank (6). The oil inlet end of the drain valve (5) is connected to a first return oil pipe (51), and the drain valve (5) is connected to the hydraulic cylinder (4) through the first return oil pipe (51). The oil outlet end of the drain valve (5) is connected to a second return oil pipe (61), and the drain valve (5) is connected to the oil tank (6) through the second return oil pipe (61).

3. The special hydraulic lifting device for replacing a yaw motor according to claim 2, characterized in that, It also includes an oil suction check valve (7), the oil suction check valve (7) has a connecting pipe (71) connecting both the oil inlet and the oil outlet. One of the connecting pipes (71) is connected to the oil tank (6) and the oil inlet of the oil suction check valve (7) respectively, and the other connecting pipe (71) is connected to the oil outlet of the oil suction check valve (7) and the hydraulic pump (2) respectively.

4. The special hydraulic lifting device for replacing a yaw motor according to claim 2, characterized in that, The oil tank (6) is installed below the hydraulic pump (2).

5. The special hydraulic lifting device for replacing a yaw motor according to claim 4, characterized in that, A mounting bracket (62) is installed above the oil tank (6), and the hydraulic pump (2) is mounted on the mounting bracket (62).

6. The special hydraulic lifting device for replacing a yaw motor according to claim 2, characterized in that, The drain valve (5) is located between the hydraulic pump (2) and the hydraulic cylinder (4).

7. A special hydraulic lifting device for replacing a yaw motor according to any one of claims 1-6, characterized in that, The hydraulic pump (2) includes a pump body (21) mounted on the movable base (1), a piston plate (22) disposed in the pump body (21), and a piston rod (23) fixedly connected to the piston plate (22) at one end. The other end of the piston rod (23) extends upward out of the pump body (21) and is threadedly connected to the pump body (21).

8. A special hydraulic lifting device for replacing a yaw motor according to any one of claims 1-6, characterized in that, The movable base (1) includes a base (11) and a plurality of rollers (12) mounted on the base (11), and the hydraulic pump (2) and the hydraulic cylinder (4) are both mounted on the base (11).

9. A special hydraulic lifting device for replacing a yaw motor according to claim 8, characterized in that, The movable base (1) also includes at least three vertical telescopic support members (13) evenly distributed on the base (11).

10. A special hydraulic lifting device for replacing a yaw motor according to claim 9, characterized in that, Each of the vertical telescopic support members (13) includes a screw (131) threaded to the base (11), a pad (132) connected to the lower end of the screw (131), and a handle (133) fixedly connected to the upper part of the screw (131) at one end.

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